Model 48 - Zurn

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Rev. KDate: 11/19Document No. GV-48WILKINSProduct No. Model 48

Model 48Resilient Wedge Gate Valve

Zurn Industries, LLC | Wilkins1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766In Canada | Zurn Industries Limited7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6, 877-892-5216 www.zurn.com

SIZEDIMENSIONS (approximate)

A (all gates) B (flanged) C D (NRS gates) D (OS&Y open) D (OS&Y closed)

in. mm in. mm in. mm in. mm in. mm in. mm in. mm2 1/2 65 7 1/2 191 7 178 7 7/8 200 11 1/2 292 17 3/4 451 15 3/8 391

3 80 8 203 7 1/2 191 10 1/4 260 12 3/4 324 20 1/4 514 17 4324 100 9 229 9 229 10 1/4 260 14 1/2 368 22 1/2 572 18 1/4 4646 150 10 1/2 267 11 279 12 1/2 318 18 457 30 1/2 775 24 1/4 6168 200 11 1/2 292 13 1/2 343 14 3/4 375 21 1/8 537 37 940 28 1/2 72410 250 13 330 16 406 16 3/8 416 24 3/4 629 45 5/8 1159 34 3/4 88312 300 14 356 19 483 17 1/2 445 28 711 53 1346 40 1/2 1029

SIZETAP SIZE

BOLTS(flanged gates)

WEIGHT (approximate)NRS (FXF) NRS (GXF) NRS (GXG) OS&Y (FXF) OS&Y (GXF) OS&Y (GXG)

in. mm # OF(per flange)

size lbs. kg lbs. kg lbs. kg lbs. kg lbs. kg lbs. kg

2 1/2 65 1/2-14NPT 4 5/8 36 17 31 14 26 12 42 19 37 17 31 143 80 1/2-14NPT 4 5/8 49 22 43 20 37 17 62 28 56 25 50 234 100 1/2-14NPT 8 5/8 68 31 58 26 48 22 81 37 71 32 61 286 150 3/4-14NPT 8 3/4 111 50 99 45 87 40 127 57 115 52 103 478 200 3/4-14NPT 8 3/4 174 79 155 70 136 62 197 89 178 81 159 7210 250 3/4-14NPT 12 7/8 266 121 239 108 212 96 309 140 282 128 255 11612 300 3/4-14NPT 12 7/8 402 182 362 164 - - 442 200 402 182 - -

C

D

B

ATAP

BOLTS

Options � - NRS with flanged end connections (standard) � G - NRS with grooved end connections � GXF - NRS with grooved x flanged end connections � PI - NRS with Post Indicator connecting flange

(refer to specification sheet BF-PIWILKINS) � OP - NRS with square operating nut � OSY - OS&Y with flanged end connections � OSYG - OS&Y with grooved end connections � OSYGXF - OS&Y with grooved x flanged end connections

Accessories � OS&Y gate valve tamper switch (OSY-40)

ApplicationDesigned for installation on potable water lines, Irrigation systems, Waterworks connections, and Fire systems.

Standards Compliance• AWWA Compliant C515, C-550• UL® Listed• C-UL® Listed• FM® Approved• Meets the requirements of NSF/ANSI 372

MaterialsMain body Ductile Iron ASTM A 536 65-45-12 & Handwheel Ductile Iron ASTM A 536 65-45-12Covers Ductile Iron ASTM A 536 65-45-12Wedge Ductile Iron ASTM A 536 65-45-12 W/EPDM Coatings AWWA C550 Compliant fusion-bond epoxy finish (meets the requirements of NSF/ANSI/CAN 61)Internals Stainless steel ASTM A 276 UNS S41000/ S42000 Brass ASTM B 584 UNS C83600Fasteners Zinc plated steel Grade 8.8 Brass ASTM B 584 UNS C83600Elastomers EPDM (FDA approved)Stem Stainless steel ASTM A 276 UNS S43100 FeaturesSizes: 2 1/2", 3", 4", 6", 8", 10", 12" Maximum working water pressure 250 PSIMaximum working water temperature 140°FHydrostatic test pressure 500 PSI End connections (Grooved for steel pipe) ANSI/AWWA C606 (Flanged bolt pattern) ANSI/ASME B16.42 Class 150

Dimensions & Weights (do not include pkg.)

NRS GATES

OS&Y GATES

GxGGxFFxF

(OS&Y FXF SHOWN)

LEAD-FREE

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ZURN WILKINS Model 48 Resilient Wedge Gate ValveMaintenance Procedures

Valve Identification

Installation Instructions

The ZURN WILKINS Model 48 Resilient Wedge Gate Valve can be distinguished from other gate valve brands by observing the unique lettering on the valve body. One side designates the valve size, model, pressure rating, year of manufacture, and the UL/FM logos. The opposite side displays the valve size and “WILKINS” in vertical lettering. See pictures below.

C515

WIL

KIN

S

6”6”

MDL 48250 PSI

2008

Gate valves that do not contain the name WILKINS in raised cast letters on the valve body are not ZURN WILKINS brand.

CAUTION: Installation of ZURN WILKINS Model 48 Gate Valves must be performed by qualified, licensed personnel.

1. Cycle valve open and closed to ensure proper operation. Check that valve end connections are clean. Fully close valve prior to installation. NOTE: For OS&Y valves, a small amount of packing rubber may exit the valve via the stem during initial operations. This is normal and does not affect valve performance. If stem leakage occurs, lightly tighten bronze gland nuts evenly until leakage stops.2. Install valve per proper methods according to end connection type.3. If used in buried service, a valve box or vault should be provided for each valve.4. Ensure all bolts are sufficiently tight prior to pressurization.5. Once pressurized, open valve and thoroughly flush line to remove debris.6. Inspect valve for external leaks. If a leak is detected, see TROUBLESHOOTING section.7. Fully close valve and listen for leaks past the wedge. If a leak is detected, see TROUBLESHOOTING section.8. Fully open valve. ZURN WILKINS Model 48 Gate Valve is now in service.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov ADVERTENCIA: Cáncer y daño reproductivo - www.P65Warnings.ca.gov AVERTISSEMENT: Cancer et néfastes sur la reproduction - www.P65Warnings.ca.gov

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All ZURN WILKINS Model 48 Gate Valves must be inspected and maintained by qualified, licensed personnel at least once a year or more frequently as specified by local codes. Replacement of worn or damaged parts must only be made with genuine “ZURN WILKINS” parts.

Servicing Wedge and Bonnet Seal:1. Shut off main water supply. If servicing a gate valve attached to the downstream side of a backflow preventer, the upstream shut-off valve may be closed instead of the main water supply.2. Relieve line pressure.3. Remove bonnet nuts and bolts.4. Slowly lift and remove bonnet assembly and wedge from valve body.5. Clean all parts thoroughly after disassembly.6. Carefully inspect bonnet seal and wedge for wear or damage. Replace if worn or damaged.7. Carefully inspect body interior seating surface for coating damage and foreign debris. Clean seating surface or replace valve if necessary.8. Reinstall wedge and bonnet assembly.9. Tighten down bonnet nuts and bolts evenly. Do not over tighten.

Servicing Gland Stuffing Box (OS&Y):1. Make sure gate valve is fully open. 2. Remove gland nuts.3. Raise gland and gland bushing.4. Remove packing rings from stuffing box using a small pick or similar device.5. Replace worn or damaged packing rings.6. Lower gland and gland bushing and lightly tighten gland nuts.7. Cycle valve fully closed to fully open.8. If there is stem leakage, tighten gland nuts until leakage stops.

Servicing Stem Seals (NRS):1. Shut off main water supply and relieve line pressure.2. Remove the bolt and washer retaining the operating nut/handwheel. 3. Remove operating nut/handwheel.4. Remove gland flange bolts and gland flange.5. Remove stem by turning stem clockwise.6. Replace stem o-rings, gland flange o-ring, wiper ring, and thrust washers if necessary.7. Reassemble in reverse order.

Troubleshooting

Maintenance Instructions

PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION

1. Body Leakage 1. Loose bonnet bolts 1. Tighten bolts

2. Dirty or damaged bonnet seal 2. Inspect bonnet seal. Clean or replace if

necessary

2. Seat Leakage 1. Foreign debris between seat and 1. Cycle valve and flush line

wedge

2. Dirty/corroded seat 2. Flush line or disassemble and clean

3. Damaged seat or wedge 3. Repair or replace valve

3. Stem Leakage 1. Packing nuts loose 1. Tighten nuts

2. Stem o-rings worn (NRS) 2. Replace stem o-rings

3. Packing rings worn (OS&Y) 3. Replace packing rings

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REPLACEMENT PARTS

PART NUMBER BY VALVE SIZE

ITEM DESCRIPTION 2 1/2" 3" 4" 6" 8" 10" 12"

1 HOLD DOWN BOLT 487A-11 489A-11 489A-11 489A-11 489A-11 489A-11 489A-11

2 HOLD DOWN WASHER 487C-14 489C-14 489C-14 489C-14 489C-14 489C-14 489C-14

3 HANDWHEEL 487NRS-6 489NRS-6 489NRS-6 4810NRS-6 4811NRS-6 4812NRS-6 4813NRS-6

3 OP NUT (NOT SHOWN) 487OP-6 489OP-6 489OP-6 4810OP-6 4810OP-6 4812OP-6 4813OP-6

4 STEM RING WIPER 487-13 488-13 489-13 4810-13 4811-13 4812-13 4813-13

5 GLAND FLANGE BOLT 489C-11 489C-11 489C-11 4810C-11 4810C-11 4810C-11 4810C-11

6 GLAND FLANGE 487-8 488-8 489-8 4810-8 4811-8 4812-8 4813-8

7 GLAND FLANGE O-RING 487C-22 489C-22 489C-22 4810C-22 4810C-22 4812C-22 4813C-22

8 STEM SEAL O-RING 487A-22 489A-22 489A-22 4810A-22 4811A-22 4812A-22 4813A-22

9 STEM SEAL BUSHING 487-4 489-4 489-4 4810-4 4811-4 4812-4 4813-4

10 UPPER THRUST WASHER 487A-14 489A-14 489A-14 4810A-14 4811A-14 4812A-14 4813A-14

11 STEM 487-5 488-5 489-5 4810-5 4811-5 4812-5 4813-5

12 LOWER THRUST WASHER 487B-14 489B-14 489B-14 4810B-14 4811B-14 4812B-14 4813B-14

13 STEM O-RING 487B-22 489B-22 489B-22 4810B-22 4811B-22 4812B-22 4813B-22

14 BONNET 487-20 488-20 489-20 4810-20 4811-20 4812-20 4813-20

15 BONNET BOLT 489B-11 489B-11 489B-11 4810B-11 4811B-11 4811B-11 4811B-11

16 BONNET WASHER 489D-14 489D-14 489D-14 4810D-14 4810D-14 4810D-14 4810D-14

17 STEM NUT 487A-9 488A-9 489A-9 4810A-9 4811A-9 4812A-9 4813A-9

18 WEDGE 487-18 488-18 489-18 4810-18 4811-18 4812-18 4813-18

19 BONNET SEAL 487D-22 488D-22 489D-22 4810D-22 4811D-22 4812D-22 4813D-22

20 BODY - FLG X FLG 487-1-010F 488-1-010F 489-1-010F 4810-1-010F 4811-1-010F 4812-1-010F 4813-1-010F

20 BODY - GRV X FLG 487-1GXF-010F 488-1GXF-010F 489-1GXF-010F 4810-1GXF-010F 4811-1GXF-010F 4812-1GXF-010F 4813-1GXF-010F

20 BODY - GRV X GRV 487-1G-010F 488-1G-010F 489-1G-010F 4810-1G-010F 4811-1G-010F 4812-1G-010F N/A

21 BONNET LOCK WASHER 489E-14 489E-14 489E-14 4810E-14 4810E-14 4810E-14 4810E-14

22 BONNET NUT 489B-9 489B-9 489B-9 4810B-9 4810B-9 4810B-9 4810B-9

23 PI PLATE (NOT SHOWN)

487-17 488-17 489-17 489-17 489-17 4812-17 4813-17

24 PI PLATE BOLT (NO SHOWN)

489C-11 489C-11 489D-11 489D-11 489D-11 489D-11 489D-11

ZURN WILKINS 2 1/2" - 12" NRS ASSEMBLYMODEL 48

Replacement Parts

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154X

17

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20

224X

POST INDICATOR PLATE23

24 POST INDICATOR PLATE BOLTS

NOT SHOWN

164X

214X

3 OPERATING NUT (NOT SHOWN)

ZURN WILKINS 2 1/2" - 12" NRS ASSEMBLYMODEL 48

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REPLACEMENT PARTS PART NUMBERS BY VALVE SIZE

ITEM DESCRIPTION 2 1/2"

1 HANDWHEEL NUT 487OSYD-9

2 HANDWHEEL (NOT SHOWN) 487OSY-6

3 SET SCREW 487OSYA-11

4 RETAINER 487OSY-3

5 YOKE BUSHING 487OSYA-4

6 GLAND NUT 487OSYA-9

7 GLAND FOLLOWER 487OSY-8

8 YOKE NUT 487OSYB-9

9 YOKE 487OSYB-20

10 GLAND BUSHING 487OSYB-4

11 PACKING RING 487OSYC-22

12 GLAND BOLT 487OSYC-11

13 BONNET BOLT 489B-11

14 BONNET WASHER 489D-14

15 BONNET 487OSYA-20

16 STEM O-RING 487OSYB-22

17 STEM 487OSY-5

18 WEDGE 487-18

19 BONNET SEAL 487D-22

20 BODY - FLG X FLG 487-1-010F

20 BODY - GRV X FLG 487-1GXF-010F

20 BODY - GRV X GRV 487-1G-010F

21 BONNET LOCK WASHER 489E-14

22 BONNET NUT 489B-9

ZURN WILKINS 2 1/2" OS&Y ASSEMBLYMODEL 48

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2X8

113X

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144X

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4X

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62X

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REPLACEMENT PARTS

PART NUMBER BY VALVE SIZE

ITEM DESCRIPTION 3" 4" 6" 8" 10" 12"

1 HANDWHEEL NUT 489OSYC-9 489OSYC-9 4810OSYC-9 4811OSYC-9 4811OSYC-9 4813OSYC-9

2 HANDWHEEL 489OSY-6 489OSY-6 4810OSY-6 4811OSY-6 4812OSY-6 4813OSY-6

3 SET SCREW 487OSYA-11 487OSYA-11 487OSYA-11 487OSYA-11 487OSYA-11 487OSYA-11

4 RETAINER 489OSY-3 489OSY-3 4810OSY-3 4811OSY-3 4812OSY-3 4813OSY-3

5 YOKE BUSHING 489OSYA-4 489OSYA-4 4810OSYA-4 4811OSYA-4 4812OSYA-4 4813OSYA-4

6 YOKE 489OSYB-20 489OSYB-20 4810OSYB-20 4811OSYB-20 4812OSYB-20 4813OSYB-20

7 YOKE BOLT 489OSYD-11 489OSYD-11 4810OSYD-11 4810OSYD-11 4810OSYD-11 4810OSYD-11

8 GLAND NUT 489OSYA-9 489OSYA-9 4810OSYA-9 4810OSYA-9 4810OSYA-9 4810OSYA-9

9 GLAND FOLLOWER 489OSY-8 489OSY-8 4810OSY-8 4811OSY-8 4812OSY-8 4813OSY-8

10 GLAND BUSHING 489OSYB-4 489OSYB-4 4810OSYB-4 4811OSYB-4 4812OSYB-4 4813OSYB-4

11 GLAND BOLT 489OSYC-11 489OSYC-11 4810OSYC-11 4811OSYC-11 4811OSYC-11 4811OSYC-11

12 PACKING RING 489OSYC-22 489OSYC-22 4810OSYC-22 4811OSYC-22 4812OSYC-22 4813OSYC-22

13 BONNET BOLT 489B-11 489B-11 4810B-11 4811B-11 4811B-11 4811B-11

14 BONNET WASHER 489D-14 489D-14 4810D-14 4810D-14 4810D-14 4810D-14

15 BONNET 488OSYA-20 489OSYA-20 4810OSYA-20 4811OSYA-20 4812OSYA-20 4813OSYA-20

16 STEM O-RING 489OSYB-22 489OSYB-22 4810OSYB-22 4811OSYB-22 4812OSYB-22 4813OSYB-22

17 STEM 488OSY-5 489OSY-5 4810OSY-5 4811OSY-5 4812OSY-5 4813OSY-5

18 WEDGE 488-18 489-18 4810-18 4811-18 4812-18 4813-18

19 BONNET SEAL 488D-22 489D-22 4810D-22 4811D-22 4812D-22 4813D-22

20 BODY - FLG X FLG 488-1-010F 489-1-010F 4810-1-010F 4811-1-010F 4812-1-010F 4813-1-010F

20 BODY - GRV X FLG 488-1GXF-010F 489-1GXF-010F 4810-1GXF-010F 4811-1GXF-010F 4812-1GXF-010F 4813-1GXF-010F

20 BODY - GRV X GRV 488-1G-010F 489-1G-010F 4810-1G-010F 4811-1G-010F 4812-1G-010F N/A

21BONNET LOCK

WASHER489E-14 489E-14 4810E-14 4810E-14 4810E-14 4810E-14

22 BONNET NUT 489B-9 489B-9 4810B-9 4810B-9 4810B-9 4810B-9

ZURN WILKINS 3" - 12" OS&Y ASSEMBLYMODEL 48

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ZURN WILKINS 3" - 12" OS&Y ASSEMBLYMODEL 48

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1516

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4X

4X

# PER VALVE3” - 4” : 4 PACKING RINGS6” - 12” : 5 PACKING RINGS{

Model 48 - Zurn

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